diff options
Diffstat (limited to 'man/dnsmasq.8')
| -rw-r--r-- | man/dnsmasq.8 | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/man/dnsmasq.8 b/man/dnsmasq.8 index 8bdcaa3..4de8969 100644 --- a/man/dnsmasq.8 +++ b/man/dnsmasq.8 @@ -1356,6 +1356,11 @@ supported: the relay function will take precedence. Both DHCPv4 and DHCPv6 relay is supported. It's not possible to relay DHCPv4 to a DHCPv6 server or vice-versa. + +The DHCP relay function for IPv6 includes the ability to snoop +prefix-delegation from relayed DHCP transactions. See +.B --dhcp-script +for details. .TP .B \-U, --dhcp-vendorclass=set:<tag>,[enterprise:<IANA-enterprise number>,]<vendor-class> Map from a vendor-class string to a tag. Most DHCP clients provide a @@ -1766,15 +1771,25 @@ receives a HUP signal, the script will be invoked for existing leases with an "old" event. -There are four further actions which may appear as the first argument -to the script, "init", "arp-add", "arp-del" and "tftp". More may be added in the future, so +There are five further actions which may appear as the first argument +to the script, "init", "arp-add", "arp-del", "relay-snoop" and "tftp". +More may be added in the future, so scripts should be written to ignore unknown actions. "init" is described below in .B --leasefile-ro + The "tftp" action is invoked when a TFTP file transfer completes: the arguments are the file size in bytes, the address to which the file was sent, and the complete pathname of the file. - + +The "relay-snoop" action is invoked when dnsmasq is configured as a DHCP +relay for DHCPv6 and it relays a prefx delegation to a client. The arguments +are the name of the interface where the client is conected, its (link-local) +address on that interface and the delegated prefix. This information is +sufficient to install routes to the delegated prefix of a router. See +.B --dhcp-relay +for more details on configuring DHCP relay. + The "arp-add" and "arp-del" actions are only called if enabled with .B --script-arp They are are supplied with a MAC address and IP address as arguments. "arp-add" indicates |